Class: Campa::Lisp::Cons

Inherits:

Object

Object
Campa::Lisp::Cons

show all

Defined in:: lib/campa/lisp/cons.rb

Instance Method Summary collapse

#call(new_head, list) ⇒ Object
#initialize ⇒ Cons constructor

A new instance of Cons.

Constructor Details

#initialize ⇒ `Cons`

Returns a new instance of Cons.



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# File 'lib/campa/lisp/cons.rb', line 4

def initialize
  @printer = Printer.new
end

Instance Method Details

#call(new_head, list) ⇒ `Object`

# File 'lib/campa/lisp/cons.rb', line 8

def call(new_head, list)
  raise illegal_argument(list) if !list.is_a?(List)

  list.push(new_head)
end